Winterisation is the process of alcohol washing and freezing the initial extract. It is a type of fractionation (also known as fractionate crystallization), which is the general process of separating the triglycerides found in fats and oils, using the difference in their melting points, solubility, and volatility. This process separates the various compounds allowing further filtration to be carried out and produces an ultra-refined final product, but can inherently reduce the trace levels of cannabinoids in the spectrum.
By removing substances such as plant waxes, fats and also chlorophyll which remain in the original extract, it can also improve taste (to some) whilst leaving a highly refined and potent hemp extract with near-zero THC.
Last Updated on 23/03/2020